yes the black smoke and noise you described would be related to the turbo vanes sticking. the turbo on this engine is a vgt turbo (varible geometry turbo) it uses a solenoid to controls vanes witch allow exhaust air to control compression side of turbo. your discription sound like the unison ring which directly controls the vanes is either rusted or siezed to housing do to coking deposits. you can remove the turbo, disassemble, and clean with carb cleaner and 3M roll locks. or you could replace turbo as assembly